Do conventional diets help us to reduce weight? Does the food composition of weight loss diets matter? How important is support when losing weight? Linda Smith, an experienced dietitian and nutritional consultant outlines the issues and provides answers.
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As we all know, weight loss diets are big business. And looking at the statistics, it's easy to see why. Currently, an estimated 58 million American adults are overweight (BMI 25+), of whom an estimated 40 million are obese (BMI 30+), 9.6 million are seriously obese and 6 million suffer from super-obesity (BMI 40+). Worldwide statistics on overweight are equally alarming, as reflected in the new word "globesity". In China, the number of overweight people has risen from less than 10 percent to 15 percent in just three years. In Brazil and Colombia, the figure of overweight is about 40 percent - comparable with several European countries. Even sub-Saharan Africa is seeing an increase in obesity, especially among urban women. In all regions, obesity appears to escalate as income increases. And the higher the incidence of obesity, the higher the incidence of weight-related disease, including: type 2 diabetes, cardiovascular disease, metabolic disorders like insulin resistance, and cancers of the breast and colon.